Super Strong Block Magnet<br /><br />Neodymium chemical symbol Nd is element 60 on the periodic table. It is a rare earth metal and forms one of the Lanthanides series. When added to Iron Fe and Boron B chemical formula Nd14Fe21B the resultant magnets are the strongest magnets currently available. Neodymium magnets are sometimes known as Neo， Neod or NIB magnets.<br />Neodymium magnets are usually coated Nickel-Copper-Nickel plating to prevent the ironrusting.<br />Neodymium block magnet  was made of  NdFeB， have strong magnetic performances and appearance does not rust， usually placed in  room temperature， the maximum  operating temperature is 80 ▲ C ， and it never will demagnetization.<br /><br />Please be care when  break apart  because Neodymium block magnet have strong Magnetism.<br /><br />Shape: Block<br />Magnetic face: 25mm * 10mm Length * Width <br />Thickness: 3mm<br />Grade: N52<br />Plating: Ni-Cu-Ni  Nickel <br />Material: NdFeB<br />Color:  Silver<br />Weight: 30g<br />Quantity: 5pc<br /><br />Applications<br />Acoustic field: the speaker， receiver， microphone， alarm， stage audio， car audio and so on.<br />Electronics: permanent magnetic actuator vacuum circuit breakers， magnetic relays， meter， meter， sound meter， a reed switch， sensors.<br />Electrical field: VCM， CD / DVD-ROM， generators， motors， servo motors， micro-motors， motors， vibration motors.<br />hinery and equipment: magnetic separation， magnetic crane， magnetic hinery.<br />Healthcare: MRI scanners， medical equipment， magnetic health products and so on.<br />Other industries: magnetized Wax， pipe descaling， magnetic fixture， automatic mahjong hine， magnetic locks， doors and windows magnetic， magnetic luggage， leather magnetic toys， magnetic tools， gifts and packaging.<br /><br />Tip:<br />1， Strong magnets should Keep awayIronware and some  easily magnetized iron products， such as monitors， bank cards， computers， televisions， mobile phones and other<br />2， Strong magnets should be stored in a dry， heated environment， and need to use of plastic， wood， cardboard， foam to separated and wrapped.<br />3， Magnets might be interested in water meter ，Electric meter， gas meter and some metering equipment exist some inaccurate affect Such as : if magnets placed near  the meter， the meter will slow down<br /><br />Note: Be careful fragile and  clip hand， placed in a dry place， stored at room temperature!<br />WARNING: This is a seriously powerful magnet and it is totally unsuitable for children!!!<br /><br />Package included：<br />5X Super Strong Block Magnet